Spring structure



Jan. 29, 1935. w. H. WILMOT SPRING STRUCTURE Filed May 10, 1933 INVENTOR ATTORNEYS Patented Jan. 29, 1935 I i r 1 939 302,:

SPRING STRUCTURE William H. Wilmot, Asheville, N. C. v e Application May 10, 1933, Serial No. 670,228 f 3 Claims. (or s-252) t l UNITED s'rras Aranr forrigill f This invention relates to spring structures for outline of the structure as a'whole and lies in'a mattresses, cushionsand backs for seats, and simplane midway between what may 'be'termed, for ilar uses, which structures include a plurality of convenience, the upper and lower sides 'of said springs, each formed of a single coil of wire and structure, surrounding the assembled springs to 2111 assembled in side by side relation within the confine them within the desired area and to form structure. means to which those springsalong the frame The'main object of the present invention is to may be secured. v provide a spring structure of thischaracter in The several springs 1 are located within "the which the several coiled springs are so-formed and ame 2 in pa d apa relation, these d t held within the assembly as to provide the maxithe frame being secured thereto, each by a clip 3 To 1 mum of free yieldability, and to make the inator the like embracing the frame and a central tress cushion or other device of which this spring turn or coil 4 of the sprin Wh h s t e 0011 that structure forms a part, very soft and pliable, even is at the center of the spring or midway between to the extent of making the structure suitable for its e m ends, a Connecting a h f the use in an article, suchasa pillow. p g Wi h adjacent Sp u ut he 15 I A further object is to provide means for conu ur a h t coiled sp s 5 f small dinecting and holding the several coiled springs in m having s forming b oks 6 to hook over proper place and relation within the spring structhe Central turns 4 and yieldingly C n ct the ture, such means being positioned and arranged Several Springs in substahtiellythe Central plane to connect the several springs together midway of Of the Structure and Plane of d ame. 20 their lengths onl thus leaving the end portions To bring the turns 4 o the v a sp s int of th s er l springs free and unconnected t substantially a horizontal plane and the plane of provide extreme flexibility thereof both longitu- Said marginal frame; d hus fo a base for the dj u d l t ll several free turns of each spring at the upper and It is also an object to provide a spring structure lower ends of each spring above and below this 25 suitable for the purpose, which is very light in plane, to hold these end portions in a up t weight, simple in construction and cheap to manposition With the axes 0f the Springs a ht ufacture, and which embodies certain new and angles to Said P this Coil 4 of each Spring at useful feature i th construction, combination one side thereof is connected to an adjacent side and arrangement of parts, all as hereinafter morev an adjacent turn 7 by h00king the hook 6 of 30 fully described, reference being had to the accomone Of the connecting e 5 Over both of these panying drawing, in whieh turns, thus drawing them together at that side Figure 1 is a plan i f a portion of spring and deflecting one or both turns out of their norstructure illustrative of an embodiment of the mall position and eliminating the tendency Of t e present invention; spring to tilt laterally, which would be the tend- Fig. 2 is a side elevation of the same, showing noy f he spri w s connected t an adja nt the margin frame thereof in section; and Spring p s y a C n ction engaged with a Fig. 3 is a detail View showing a central portion Single tum eXteIldiIlg in its normal inclined diof one of th springs shown in Figure 2 and 1 rection. By securing two adjacent turns together ing in a direction t right angles t t t f said at one side, the turns are deflected into the plane figure of the frame 2 and thus this deflected turn or The spring structure, hether it b of size nd turns provide what may be termed a base for the shape to form the spring structure for a seat, e d portions of each Spring t ach Side Of mattress, or other device, includes a plurality of this base, Which a is held, y its ection coiled springs each indicated as a whole by the With the ot p gs and frame, in a substan- 45 numeral 1 and each formed from a single wire. tielly horizontal plane to hold Said Spring in all These several springs are confined within a marupright position With its eXiS extending at ginal frame 2 consisting of a heavy wire bent to right angles to e p a e of the frame. conform to the outline of the device to which the The end turns of each Spri ov and below spring structure is to be applied, this frame sursuch base or at each side of the, plane of the rounding the assembled springs and extending in holding frame, are thus left perfectly free to yield a plane transversely of the longitudinal axes of in any direction, and'as each spring is formed the springs and located midway between the of a single wire,'when the structure is assembled planes of the extreme ends of said springs. This in upholstery, cushions, mattresses and the like, single frame member-thus forms the margin or both sides of the cushion or other product, are

very soft and yielding because of this free yieldability of the springs, providing a coiled spring assembly which may, by making the springs of small wire, be used in pillows or similar devices where softness is essential.

Further, by connecting the several springs within a marginal frame formed of a single wire or the like and located midway between the top and bottom surfaces of the finished product, this frame does not give undue stiffness or rigidity to:

the product at a partthereof where it will make the product uncomfortable to sit upon or lie against, the margins of the surfaces of the mat-g tress pillow or other device being just as soft and yielding as the central portions of such surfaces. This spring structure when applied to 7 any form of upholstering and covered by the usual padding and fabric covering, provides' a very soft, yieldable filling as said springs are yieldingly held in proper assembled relation without the necessity-for attaching the ends of the springs to the enclosing covering.

Obviously any suitable form of clips for attaching'the springs to the frameand any suitable form: of connection between the several springs may be employed without departing from the spirit of the invention, and such changes are contemplated:

What I claim is:

1. A spring structure including a plurality of coiled springs, and means connecting adjacent turns midway of the length of each spring, by deflecting said adjacent turns toward each other at oneside of said turns and engaging said means therewith at their point of nearest approach to each other and engaging said means with turns' of adjacent springs, said connecting means and deflected turns of the several springs extending in substantially the same horizontal plane midway of the lengths of said springs, with the turns of each spring at each side of said plane unconnected with the other springs.

2. A spring structure including a plurality of coiled springs each formed of a single, continuous, spiral wire with adjacent turnswof said-ispiral midway of, thelength of eachspiingsdefiected toward each other and secured together at one meeting point thereof and. connected to a turn of an adjacent spring by short coiled springs formed with end hooks to embrace said turns with said short springs under tension, the turns of each spring at each side of said midway turns, being unconnected to other springs and the ends of these springs being free.

3. A spring structure including a plurality of springs each formed; of a continuously coiled wire and set in said structureinispacedapart:relation with the ends of the wire free, a margin frame-member, means for securing to said mem ber,,a midway turn of eachof the springsadjacent thereto, midway adjacent turns of each spring being deflected to contact, each other at one point, and means comprising small coiled springs having open end hooks to receive and secure at their points of contact midway turnsv of each spring together and to hook over a-.mid-

way turn of an adjacent spring to connect all. of. said springs together in a common midway planeof said structure.

WILLIAM H. WILMOT. 

